Scripting and Such Developer Tools
ActiveState's Komodo IDE
Komodo IDE 4 is a powerful, multi-platform, multi-language IDE for end-to-end development of dynamic web applications. Komodo IDE makes creating robust web apps fast and easy, with a rich feature set for client-side Ajax technologies such as CSS, HTML, JavaScript and XML, coupled with advanced support for dynamic languages such as Perl, PHP, Python, Ruby and Tcl.
Award-winning features include comprehensive editing and debugging, plus intelligent tools for regular expressions, team development, customization and unparalleled extensibility. The result is a powerful coding environment for framework stacks like Ruby on Rails and CakePHP and client libraries such as the Yahoo! UI Library and Dojo. A single license covers you across Windows, Mac OS X and Linux.